Peterson is a former undrafted free agent who played in six games for the Rams last season, emerging as a solid depth player in his second NFL season. He made his first NFL start in the NFC West champions' season finale, and he intercepted two passes from San Francisco's Jimmy Garoppolo.

Peterson was in the midst of a strong training camp with the Rams, but he was hurt during their loss at Baltimore on Thursday.

Hyeamang is a Columbia product who spent time on Seattle's roster earlier this year.

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